Question

State the role of the following in human digestive system
a) HCL b) Mucus c) Villi

Answer 1

a) Hydrochloric acid creates an acidic medium for pepsin,a protein digesting enzyme.

b)Mucus protects the inner lining of stomach from the action of hydrochloric acid.

c)Villi are small finger-like projections in the small intestine. Villi is richly supplied with blood. Villi absorbs the digested food from where it is taken to different parts of the body.

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